adjusting idle on k1200rs? - - Excellence in Motion
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post #1 of 3 (permalink) Old May 4th, 2007, 5:18 pm Thread Starter
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adjusting idle on k1200rs?

can anyone advise me as to how to adjust the idle on my 98 k1200rs, it is idling at 2000 rpm and I am new to the BMW K world.......thanks
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post #2 of 3 (permalink) Old May 4th, 2007, 9:46 pm
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might pay to check for air leaks on the throttle bodies, intake boots, and related plumbing.

Mike Kelly

Triple M Engineering


Stanley, NC
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post #3 of 3 (permalink) Old May 5th, 2007, 3:30 am
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There's no 'adjustment'. First check you have slack in the throttle cable and you can hear a sharp click as the twistgrip shuts off (this is the slides hitting the bottom of the bodies).

The ECU manages the idle rpm to 1K to 1100rpm, making small corrections for lean/rich mixture. If yours is 2K then there's something wrong and the fuel ratio is outside the narrow correction range of the ECU. Check for leaks in the throttle bodies, intake boots etc. Finally, on your older bike (mine's a '97) you may have to change the O2 sensor in the muffler. I did mine at 32K. If that doesn't fix it you may have to get the Throttle Potentiometer Settting (TPS) and general diagnostics checked on a BMW Moditec - 1/2-1hour labor.

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